6100 BSC Programming Manual

CONTENTS
PREFACE.................................................. vii
SECTION 1: INTRODUCTION TO 6100 BSC..................... 1-1
Features of the 6100 BSC Product....................... 1-2
6100 BSC Concepts and Context.......................... 1-5
Station Types........................................ 1-5
Message Formats...................................... 1-7
Data Link Control Procedures......................... 1-19
Line Configuration Options........................... 1-41
SECTION 2: 6100 BSC LINK AND STATION MANAGEMENT......... 2-1
Line States and Transitions............................ 2-2
DISCONNECTED State................................... 2-4
CIRCUIT ASSURANCE State.............................. 2-8
CONTROL State........................................ 2-11
READ State........................................... 2-16
WRITE State.......................................... 2-19
MULTILEAVING State................................... 2-22
Modem Signals and Their Use............................ 2-24
SECTION 3: WRITING APPLICATIONS THAT USE 6100 BSC....... 3-1
Opening the Line..................................... 3-2
Setting Line Parameters.............................. 3-4
Starting the Link.................................... 3-6
Bidding for the Line................................. 3-8
Transferring Data.................................... 3-12
Relinquishing the Line............................... 3-17
Shutting Down the Link............................... 3-19
Closing the Line..................................... 3-19
Recovering from Errors............................... 3-20
Cancelling a Request................................. 3-22
Requests and Responses................................. 3-23
ABORT Request and Response........................... 3-27
CONTROL Request and Response......................... 3-30
FETCH CONFIGURATION Request and Response............. 3-36
FETCH STATISTICS Request and Response................ 3-39
HALT READ Request and Response....................... 3-41
READ Request and Response............................ 3-43
SET CONFIGURATION Request and Response............... 3-45
SETMODE Request and Response......................... 3-49
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